Tomizawa, Soma City, Nakanosawa: Oxfordian - Kimmeridgian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Hybodontiformes
- Acrodontidae
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Asteracanthus somaensis
(Yabe 1902)
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| Yabe 1902 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan | County: | Fukushima-ken |
| Coordinates: | 37.8° North, 140.9° East (view map) | ||
| Paleocoordinates: | 45.1° North, 144.3° East |
Time
| Period: | Jurassic | Epoch: | Late/Upper Jurassic |
| 10 m.y. bin: | Jurassic 5 | ||
| Key time interval: | Oxfordian - Kimmeridgian | ||
| Age range of interval: | 161.50000 - 149.20000 m.y. ago |
Stratigraphy
| Formation: | Nakanosawa |
Lithology and environment
| Primary lithology: | black lithified "limestone" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 133508 | ||
| Authorizer: | M. Clapham | Enterer: | P. Vazquez | Research group: | vertebrate |
| Created: | 2012-09-14 09:44:11 | Last modified: | 2013-11-25 13:02:06 |
| Access level: | the public | Released: | 2012-09-14 09:44:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 42990. | M. Goto. 1994. Palaeozoic and early Mesozoic fish faunas of the Japanese Islands. The Island Arc 3(1994):247-254 [M. Clapham/P. Vazquez] |